Damage cap

Whats the highest damage cap on raids and levels (basically all except titans)?
Cuz when i combine Wu and Bt my heroes get up to 2300 dmg and miss most of the time ( like 80%), but when they hit its like 80 % hlth off. Is there any real attack damage cap in the game?

I manage to do 7.000 damage per tile damage from time to time. I used Wu + Frida + Grimm + Kiril + Richard.

With Wu-Kong, def-debuffers, elemental-def-debuffer plus attack-buffers this is possible!

Edited: Nevermind. I didn’t read the except titans line.